The SecureKid 400 has the sure latch that self tightens and I believe extra side impact protection.

Keep in mind though that there is a weight limit for using Latch. My car has a 40 lb limit, so for me the sure latch was pointless for my 43 lb kiddo. You should be able to find the vehicle weight limit for latch in your car's manual I believe.

Ugh! Thanks for that reminder, I completly forgot. Good grief, car seat saftey really should be a little more cut and dry, there are so many variables, no wonder people don't know, or can never remember the ins and outs of it all.

I am trying to find out how long I can use the latch in my truck. Here is the owners manual, and all it says is how to use them, not how long you can use them, or maybe I am just blind! Where else can I look to get this info?

I like the Graco Nautilus, because you will eventually need a booster and it makes a pretty good booster. The Maestro does not. I am not sure about the evenflo 300/400? But you could factor that into the cost of yeah you could buy another $45+ seat later or spend that now and not worry about it. Also the Graco Nautilus can be used as a booster with LATCH. Just my 2 cents!

__________________Breastfeeding, baby wearing, cloth diapering, non-circing, co-sleeping, ERFing, Part time working mamma of three monkeys DD(2/07), DS(11/10):wave2: and DD(5/13) .